Table of Contents
Why is life possible only on the earth short answer?
Life exists only on earth because of the following reasons: Earth is at an adequate distance from the sun which gives us heat that is neither too hot nor too cold. Earth has enough amount of water, food and air for survival of living organisms. Earth has a protective ozone layer which protect us from the harmful rays.
How long will the life on earth last?
End of the Sun Gamma-ray burst or not, in about a billion years, most life on Earth will eventually die anyway due to a lack of oxygen. That’s according to a different study published in March in the journal Nature Geoscience.
Why does earth sustain life?
It is the right distance from the Sun, it is protected from harmful solar radiation by its magnetic field, it is kept warm by an insulating atmosphere, and it has the right chemical ingredients for life, including water and carbon.
Why is life not possible on all planets answer?
Living beings need the atmosphere to be of a specific composition, with oxygen to breathe and live, the atmosphere and the plants provide them with this gas. The temperature of the planet matters a lot too, living beings would cease to exist if the temperature on the planet was too high or too low for them to handle.
Why life is not possible on all planets?
Why is life possible on the Earth class 3?
Life is possible on Earth because the planet has water on its surface and oxygen gas in its air. Earth also has the perfect range of temperatures for life. It is not too hot, like Venus, and not too cold, like Neptune.
Why is life possible on Earth Wikipedia?
Some geological evidence indicates that life may have arisen as early as 4.1 billion years ago. Since then, the combination of Earth’s distance from the Sun, physical properties, and geological history have allowed life to evolve and thrive.
What is Universe short answer for Class 6?
Answer: The universe is a collection of all planets, stars, galaxies, celestial bodies, gases, dust clouds, light, etc. It is considered as an endless space.
What is the earliest evidence of life on Earth?
The earliest undisputed evidence of life on Earth dates at least from 3.5 billion years ago, during the Eoarchean Era, after a geological crust started to solidify following the earlier molten Hadean Eon.
What processes lead to life?
Understanding the processes that lead to life, however, is complicated by the actions of biology itself. Earth’s atmosphere today bears little resemblance to the atmosphere of the early Earth, in which life developed; it has been nearly reconstituted by the bacteria, vegetation, and other life forms that have acted upon it over the eons.
What can we learn from Earth about life on other planets?
We can also find on Earth direct evidence of the interactions of life with its environments, and the dramatic changes that life has undergone as the planet evolved. This can tell us much about the adaptability of life and the prospects that it might survive upheavals on other planets.
What forms of life emerge during the eukaryotic era?
Eukaryotes, a more complex form of life, emerge, including some forms of multicellular organisms. Bacteria begin producing oxygen, shaping the third and current of Earth’s atmospheres. Plants, later animals and possibly earlier forms of fungi form around this time.